29727467139 has 4 divisors (see below), whose sum is σ = 39636622856. Its totient is φ = 19818311424.

The previous prime is 29727467131. The next prime is 29727467153. The reversal of 29727467139 is 93176472792.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 29727467139 - 2³ = 29727467131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29727467131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4954577854 + ... + 4954577859.

It is an arithmetic number, because the mean of its divisors is an integer number (9909155714).

Almost surely, 2^29727467139 is an apocalyptic number.

29727467139 is a deficient number, since it is larger than the sum of its proper divisors (9909155717).

29727467139 is an equidigital number, since it uses as much as digits as its factorization.

29727467139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9909155716.

The product of its digits is 8001504, while the sum is 57.

The spelling of 29727467139 in words is "twenty-nine billion, seven hundred twenty-seven million, four hundred sixty-seven thousand, one hundred thirty-nine".